Method for effective indexing of partially dynamic documents

• US 6,606,639 B2
• Filed: 05/22/2002
• Issued: 08/12/2003
• Est. Priority Date: 09/23/1997
• Status: Expired due to Term

• Current Assignee: Bampton Technologies, LLC (Intellectual Ventures LLC)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Srivastava, Divesh, Krishnamurthy, Balachander, Jacobson, Guy
• Primary Examiner(s): Mizrahi, Diane D.
• Application Number:
  US10/151,858
• Publication Number:
  US 20020138467A1
• Time in Patent Office: 447 Days
• Field of Search: 707/201, 707/104.1, 707/10, 707/1, 711/214, 711/111, 709/223, 709/224, 365/200
• US Class Current: 1/1
• CPC Class Codes: G06F 16/93 Document management systems
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques
• CPC Class Codes: Y10S 707/99931 Database or file accessing
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users

Abstract

A method more efficiently indexes dynamic documents. The method adjusts the frequency with which dynamic documents are retrieved taking into account the extent to which the document varies between its most recent retrievals. Furthermore, the method selects portions of the document to be indexed based on the substance of the differences between recently retrieved copies.

Claims

1. A method for efficiently indexing a changing document, comprising:

detecting at least one of a rate of change and a significance of a change to said document; and

adjusting a frequency of indexing of said document in accordance with said detecting, wherein said time interval of indexing is increased if said rate of change increases.

2. A method for efficiently indexing a changing document, comprising:

detecting at least one of a rate of change and a significance of a change to said document; and

adjusting a frequency of indexing of said document in accordance with said detecting, wherein said frequency of indexing is increased if said significance exceeds a predetermined threshold.

3. A method for efficiently indexing a changing document, comprising:

detecting at least one of a rate of change and a significance of a change to said document; and

adjusting a frequency of indexing of said document in accordance with said detecting, wherein said frequency of indexing is decreased if said rate of change decreases.

4. A method for efficiently indexing a changing document, comprising:

detecting at least one of a rate of change and a significance of a change to said document; and

adjusting a frequency of indexing of said document in accordance with said detecting, wherein a frequency of indexing is decreased if said significance falls below a predetermined threshold.